David V Jack

US Patent:

49872877, Jan 22, 1991

Filed:

May 12, 1989

Appl. No.:

7/351425

Inventors:

David E. Jack - Irvine CA

Assignee:

Prevent-A-Crime International, Inc. - Santa Ana CA

International Classification:

B23K 2600

US Classification:

21912169

Abstract:

A laser beam cuts a thin stencil template from a label. The label includes a layer or facestock of polyester which can withstand a harsh environment, and a protective topcoat of a polyester resin and a silicone particulate. The label has a releasable adhesive applied to its lower surface, the adhesive being covered with a backing strip which is coated to facilitate separation from the adhesive. The laser light beam is moved so the label and any exterior coating that may be on it is "cut" or vaporized to form a pattern. The laser light beam also removes the adhesive material in its path, while leaving the backing strip intact. Use of the stencil includes: removing the backing strip from the label; applying the label to a surface to be etched with the releasable adhesive holding the label where positioned; applying etching compound to the surface to be etched through the stencil; allowing the etching compound to set in the glass for a desired period of time; and removing the stencil; and wiping off any excess etching compound.

US Patent:

51515725, Sep 29, 1992

Filed:

Oct 29, 1990

Appl. No.:

7/605518

Inventors:

David E. Jack - Irvine CA

Assignee:

Prevent-A-Crime International, Inc. - Santa Ana CA

International Classification:

B23K 2600

US Classification:

21912169

Abstract:

A laser beam cuts a thin stencil template from a label. The label includes a layer or facestock of polyester which can withstand a harsh environment, and a protective topcoat of a polyester resin and a silicone particulate. The label has a releasable adhesive applied to its lower surface, the adhesive being covered with a backing strip which is coated to facilitate separation from the adhesive. The laser light beam is moved so the label and any exterior coating that may be on it is "cut" or vaporized to form a pattern. The laser light beam also removes the adhesive material in its path, while leaving the backing strip intact. Use of the stencil includes: removing the backing strip from the label; applying the label to a surface to be etched with the releasable adhesive holding the label where positioned; applying etching compound to the surface to be etched through the stencil; allowing the etching compound to set in the glass for a desired period of time; and removing the stencil; and wiping off any excess etching compound.

US Patent:

49764560, Dec 11, 1990

Filed:

Sep 28, 1988

Appl. No.:

7/250314

Inventors:

David E. Jack - Irvine CA

Assignee:

Prevent-A-Crime International, Inc. - Santa Ana CA

International Classification:

B42D 1500

US Classification:

283 70

Abstract:

A label formed of a plastic film having a mottled background on its lower surface, which is covered by a layer of adhesive and a backing strip. The label has an invisible identifier on its upper surface which becomes visible when a marking pen is applied to it and the excess material around the identifier is wiped away.